How to use: 1. install the E3-A APP from the app store to search the APP2. The binding the APP please make sure that the bluetooth open the patch near the phone click on the patch button. 3. Operating the Ring tracker through the APP can call the Ring tracker to check the position of the Ring tracker 4. Set the Ring tracker can adjust the alarm distance open two-way lost look for lost items. NOTE: One Anti Lost Alarm Match One Phone ONLY.

Samsung Galaxy Note 2/Note 3/note4/S3/S4/S5 LG Nexus 4/Nexus 5/ HTC One (M8) lenovo VIBE X2/Z2 Pro Mi:2A/2S/3/4 Huawei/Mate2/Mate7/P7 If your device is none of the above,Ring tracker mini and Ring tracker App can still be available as long as your phone system is Android 4.3 or above and supports bluetooth 4.0. Although we do not assure you the same experience as the above devices,we will keep working on supporting more devices to bring you better experience.